Type-writing machine.



No. 795,505. PATENTED JULY 25, 1905.

0. GORWITZ. I

TYPE WRITING MACHINE.

uruonxon FILED JAN. 20. 1904.

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UNITED STATES PATENT OFFICE.

OSKAR GORWITZ, OF BERLIN, GERMANY, ASSIGNOR TO YOST .WRITING MACHINECOMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

TYPE-WRITING MACHINIE.

Patented July 25, 1905.

To all whom it may concern.-

Be it known that I, OSKAR Gonwrrz, a subject of the German Emperor, anda resident of Berlin, Germany, have invented certain new and usefulImprovements in Type-Writing Machines, of which thefollowingis aspecification.

My invention relates to means for maintaining the printinginstrumentalities of a type-writing machine in the abnormal positions,more particularly to facilitate the placing of the inking pad or surfacein and removing the same from the machine; and the object of saidinvention is to provide a simple and efficient device of the characterand for the purposes specified.

To the above and other ends, which will hereinafter appear, my inventionconsists in the various features of construction; arrange ments ofparts, and combinations of devices to be hereinafter described, andparticularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters indicatecorresponding parts in both views, Figure 1 is a frontto-rear verticalsectional view of sufficient number of parts of one form of type-writingmachines to illustrate my invention in its application thereto. Fig. 2is a detailperspective view of the device.

I have illustrated my invention applied to a N 0. 10 Yost type-writingmachine, though it should be understood that the invention may beapplied to other characters of writing-machines, and to this end variousmodifications may be made without departing from the spirit of myinvention, which, broadly considered, contemplates means for maintainingthe various printing instrumentalities of a type-writing machine in theabnormal positions so that the inking pad or surface may be readilymounted in or removed from the machine without being interfered with bythe printing instrumentalities.

In Fig. 1 the base 1 of the machine is surmounted by a casting 2, thatconstitutes a support for the links 3 of the type-bars and for thetype-ring 4, in which a pivot-wire 5 is seated, said wire cooperatingwith the actuating-levers 6, which are each pivoted at 7 to a jointedmember 8 of the type-bar. Each actuating-lever 6 is connected to one endof a contractile spring 9, that has its other end connected to adraw-link 10, that is pivoted at one end 11 to the actuating-lever ofthe type-action and is pivotally connected at its lower end 12 to onearm of a bell-crank lever 13. Each bell-crank is pivoted at 14 to ahanger 15, and a draw-link 16 is pivoted at one end 17 to the other armof the bell-crank and at its opposite end to a shutter-like lever 18,that is supported upon a pivot-rod 19 and has a rearwardly-extendingcurved arm 20 projecting therefrom. A key-stem 21 is pivoted to each arm20 and is likewise pivoted at 22 to a link 23, the forward end of whichturns on a pivot-rod 24, so that the key-stem moves on what isessentially parallel links.

The upper end of each key-stem is providedwith a finger key or head 25.

It will be understood that the usual form of carriage is provided,though only the platen 26 is diagrammatically illustrated. An inking-pad27 is mounted within a metallic frame or casing 27, which is removablysecured to the type-ring, and the faces of the various types 28 normallyrest against the inking-pad. A depression of a finger-key is effectiveto move the type to the printing position through the intermediateconnections between the type-bar and fingenkey. The construction thusfar described em bodies portions of the well-known No. 10 Yosttype-writing machine, and furtherdescription thereof is deemedunnecessary.

A plate 29 preferably of sufficient dimensions to cover the keyboard ofthe machine, is provided at one edge thereof with downwardly andforwardly extending fingers 30, which are secured to the plate by rivets31 or otherwise. Each of the fingers 30 is provided with a bent end 32and is adapted to take under the flange 33 of the frame of thetype-writing machine, as illustrated in Fig. 1. The rear edge of theplate is cut away at 34 in order to facilitate an application of theplate to the machine, and the rear edge of the plate is likewiseprovided with a downwardly-extending flange 35, which extends above theupper bank of printing-keys 25.

Pivoted to the plate at 36 is a latch 37 which when in the lockedposition has an upwardly and rearwardly extending portion or member 38,that is adapted to take under the typering or top plate of the machinein order to secure the plate in place.

frame or casing from the machine to effect a substitution of oneinking-pad for another or for any other purpose, it is merely necessaryto place the bent ends 32 of. the fingers 30 under the flange 33 on thekeyboard and to press the plate 29 down, thereby moving the variousprinting-keys from the positions i11 dicated in dotted lines to thepositions shown in full lines in Fig. 1. The latch 37 may then be turnedon its pivot to the locking position and the member 38 of the latch willengage under the type-ring and the plate with which the keys contactwill be locked in position, thereby locking the finger or printing keysin the positions to which they have been depressed. The effect ofdepressing the various keys in the manner described is to move thevarious printing instrumentalities or type-bars to the positionsillustrated in Fig. 1, so that the type-faees are moved away from theprinting-pad or inking-surface against which they normally rest, andthey do not interfere with the ready removal of the inking-pad and itsframe from the machine. After one pad has been substituted for anotherand the pad-frame has been secured in place the latch 37 may be moved tothe releasing position and the contact-plate 29 removed, therebyaffording a return of the various printing-keys to their normalpositions, and the type-faces will again rest against the face of theprinting-pad.

What I claim as new, and desire to secure by Letters Patent, is

1. A device of the character described which comprises holding meansthat bear upon the key-heads to hold the printing-keys of a type-writingmachine in depressed positions, and means for securing said holdingmeans in place.

2'. A device of the character specified which comprises a contact-platethat cooperates with the key-heads of a type-writing machine, and meansby which said contactplate may be attached to a type-writing machine tohold all of the printing-keys depressed and maintain the printinginstrumentalities in abnormal positions.

3. The combination with a type-writing machine, means adapted to beconnected thereto for retaining the printing-keys of the machine in thedepressed positions, said means comprising a detachable plate thatlioop'erates with and bears upon the printingeys.

4. The combination with a type-writing machine having printinginstrumentalities which normally rest on an inking-surface, ofdetachable means cooperating with the printing-keys for holding theprinting-keys in the abnormal positions so as to hold the printinginstrumentalities away from the inking-surace.

5. The combination with a type-writing machine, of a detachablecontact-plate that is adapted to bear upon the printing-keys of themachine and maintain them depressed.

6. The combination with a type-writing machine, of a contact-plate thatis adapted to extend over the entire keyboard of the machine, andengaging devices that removably secure the contact-plate to the machineand maintain the said plate in position to hold the printing-keysdepressed.

7. The combination with a type-writing machine, of a contact-plate thatis adapted to extend over the entire keyboard of the machine, fingersthat extend from said plate and cooperate with the machine to hold theplate in place, and a latch that holds the plate in position and theprinting-keys depressed.

8. The combination with a type writing machine, of a contact-plate thatis adapted to extend over the keyboard of the machine, fingers that aresecured to said plate and are adapted to engage the frame of thetypewriting machine, and a movable latch carried by said plate andadapted to engage a fixed portion of the type-writing machine to holdthe plate in place on the machine and maintain the printing-keysdepressed.

9. The combination with a type-writing machine havin printinginstrumentalities that are normally in contact with an inkingsurface, ofa plate that is adapted to extend over the keyboard of the machine andto hold the printing-keys depressed and the printing instrumentalitiesin the abnormal position, and means for affording an attachment of saidplate to and a detachment thereof from the type-writing machine.-

10. The combination with a type-writing machine, of a detachable platewhich is adapted to contact with all of the printingkeys and to bemaintained in an inclined position and hold said printing-keysdepressed.

11. The combination with a type-writing machine having printinginstrumentalities that are normally in contact with an inkingsurface, ofa contact-plate that is adapted to extend over the keyboard of themachine and to contact with and hold all of the printingkeys depressedand the printing instrumentalities in the abnormal positions, and apivoted latch carried by said plate and adapted to cooperate with afixed portion of the machine for affording an attachment of said plateto and a detachment thereof from the type-writing machine.

12. The combination with a type-writing machine, of a contact-plate thatis adapted to bear upon and hold the printing-keys depressed, fingersthat extend downwardly and forwardly from said plate when it is in theoperative position and engages the frame of the machine, and a movablelatch for afiording a removal of the plate from the machine. 13. Thecombination with a type-writing machine, of a contact-plate that isadapted to bear upon and hold the printing-keys depressed, fingers thatextend downwardly and forwardly from said plate When-it is in theoperative position and engages the frame of the machine, and a movablelatch that is carried by the plate and is adapted to extend upwardly andrearwardly from the plate and to engage the top plate or ring of themachine, to hold the contact-plate in place and maintain theprinting-keys depressed and to afford a removal of the contact-platefrom the machine.

Signed at Berlin, Germany, this 2d day of December, A. D. 1903.

OSKAR GORWITZ. Witnesses:

WOLDEMAR HAUPT, HENRY 'IIASPER.

